A method for removing a pin from a battery assembly by the step of providing a separator comprising: a microporous membrane having an exterior surface portion of polypropylene, the polypropylene including at least 50 ppm of metallic stearate, preferably ca...

A separator for a solid polymer electrolyte type fuel cell wherein multipile single cells are laminated and made up of a solid polymer electrolyte layer and catalyst electrode layers, gas diffusion electrodes and separators disposed on either side of the s...

A separator capable of inhibiting the self-discharge of a battery. The separator is a battery separator obtained by applying a polymer having in the molecule a carbodiimide unit represented by the following formula (I): -Ä-R-N=C=N-Ün- (wherein R means an...

In a separator for a fuel cell according to the invention, a separator is formed by a molding a bondcarbon compound in which a composition ratio of graphite powder is set to 60 to 90 %, and a composition ratio of a thermosetting resin is set to 10 to 40 %,...

Conventionally, a separator has a function of losing its ion conductivity because melt takes place if the temperature rises when a failure such as short-circuit occurs and accordingly the sizes of pores in the separator decreases. However, the pores clog i...